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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
1633 | // Back compat filters |
1634 | if ( 'slug' == $field ) |
1635 | $value = apply_filters('pre_category_nicename', $value); |
1636 |
|
1637 | } else if ( 'rss' == $context ) { |
1638 | $value = apply_filters("term_{$field}_rss", $value, $taxonomy); |
1639 | $value = apply_filters("{$taxonomy}_{$field}_rss", $value); |
1640 | } else { |
1641 | // Use display filters by default. |
1642 | $value = apply_filters("term_{$field}", $value, $term_id, $taxonomy, $context); |
1643 | $value = apply_filters("{$taxonomy}_{$field}", $value, $term_id, $context); |
1644 | } |
1645 |
|
1646 | if ( 'attribute' == $context ) |
1647 | $value = esc_attr($value); |
1648 | else if ( 'js' == $context ) |
1649 | $value = esc_js($value); |
1650 |
|
1651 | return $value; |